Valve-seat cleaner



(No Model.

J. W. MOORE.

VALVE SEAT CLEANER. I N0. 556,895. Patented Mar. 24, 1896,

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JOHN MOORE, OF LANSINGBURG, NEW YORK.

VALVE-SEAT CLEANER.

SPECIFICATION forming part of Letters Patent No. 556,895, dated March24, 1896.

Application filed August 9, 1895. Serial No. 558,720-3. ll'o model.)

To aZZ whom it may concern:

Be it known that I, J OHN "W. MOORE, a citizen of the United States,residing at Lansingburg, in the county of Rensselaer and State of NewYork, have invented certain new and useful Improvements in Valve-SeatCleaners; and I do declare the following to be a full, clear, and exactdescription of the invention, such as will enable others skilled in theart to which it appertains to make and use the same, reference being hadto the accompanying drawings, and to the letters of reference markedthereon, which form a part of this specification.

This invention relates to devices for cleaning valveseats.

It is intended to be applied to that class of mechanisms known assliding-gate valves.

The object of my invention is to provide an attachment for sliding gateswhich precedes the gate in closing the valve and clears the seat of allaccumulated obstructions, insuring the absolute closure of the passagethrough the valve.

My invention consists essentially of a pivoted bow-frame bearing asimilarly-curved scraper of soft metal adapted to brush the valve-seatand constructed in detail as hereinafter fully described.

In the accompanying drawings, wherein like letters refer to like partsthroughout, Figure 1. represents a vertical mid-section view upon aplane parallel to the valve-seats, the gates provided with my inventionbeing raised Fig. 2, a view, partly in section, upon a vertical plane atright angles with that of Fig. 1, showing the gates closed; Fig. 3, aplan view of my invention detached, the scraper being omitted; and Fig.4., a side view of Fig. 3 with the scraper included.

Referring to Figs. 1 and 2, A represents the outer casing possessingsuitable orifices and coupling devices; B, the sliding gate; 0, thevalve-seat, and D, the main ope-ratingscrew, threaded within and throughthe cross-head E, whereby the gates are raised and lowered in the usualmanner.

Referring to Fig. 3, F represents the frame of my invention provided atthe top with hooks G, so situated as to catch and carry down ward withthe closing gate collections of twigs and other foreign bodies lodgingin the upper hollow of the casing. (See also Fig. 1.)

It will be observed that the extensions of the frame, which terminate inthe hooks, incline toward each other, and the side view of the parts,Fig. 4:, shows that the thickness of these extensions is graduallylessened toward the hooks, thereby avoiding contact with the rim of thevalve seat and permitting the scraper to adapt itself closely to theseat.

The letters H H represent two apertures for the passage of themachine-screws L L,which perform the double oliice of attaching thescraper to the gate 13 and affording pivots upon which the frame swingsin operation. The lower portion of the frame F is provided with acurving recess or slot J and fitting tightly within the recess is thesoft metal scraper K.

It will be noticed Fig. 4, that the body of the scraper projects beyondthe surface of the frame, which position brings the soft metal againstthe valve-seat.

The unavoidable wear of the working parts of the valve, so far asrelates to my invention, is almost entirely confined to the soft-metalscraper, which may readily be removed and renewed.

L L mark the machin e-screw pivots already described.

The operation is as follows: The invention being properly attached, asshown in Fig. 1, let the gate be lowered. During the movement now inprogress the scraper K is held against the valve-seat by the reaction ofthe springs M, one end of each being attached to the surface of theadjacent valve-gate, as shown in Fig. 2,while the opposite extremity ofeach spring exerts a pressure upon the frame F at or near its lowestpoint. hen the valve has been completely closed, the spring M willadvance the frame slightly beyond the face of the gate and under andabout the lower part of the projecting rim bearing the valve-seat. Theordinary exterior formation of such rims is shown in Fig. 2, and uponraising the gate the frame slips easily from the inclined surface of therim. Should the gate be raised high enough to bring the lower edge ofthe frame above the topmost edge of the seat, no hindrance to the returnof the parts would be encountered, an opposite incline of the rim beingmet with.

I do not limit my construction to the precise form of the frame andscraper shown. Any suitable non-abrading material may be formed into andused as the scraper, and the hooks may be omitted or constructed in amodified or divided form, pointing in different directions, withoutdeparting from the purview of my invention.

Having thus fully described the construction and operation of mynewly-invented valve-seat cleaner, what I claim, and desire to protectby Letters Patent, is-

1. A device for cleaning valve-seats, consisting of a frame adapted tobe pivot-ally connected to a valve gate, a non abrading scraper borne bysaid frame, and attachments for maintaining pressure between the saidscraper and the seat of the valve, substantially as and for the purposesshown and described.

2. A device for cleaning valve-seats, consisting of a frame adapted tobe pivotally connected to a valve-gate, a non-abrading scraper borne bysaid frame, attachments for maintaining pressure between the saidscraper and the seat of the valve, and extensions of said frame providedwith hooks, substantially as and for the purposes shown and described.

3. The combination in a device for cleaning valve-seats, of the gate, B,frame, F, pivotally attached to said gate and provided with hooks, G,and recess, J, the scraper, K, and springs, M, arranged substantially asand for the purposes shown and described.

In testimony whereof I affix my signature in presence of two witnesses.

JOHN V. MOORE.

\Vitnesses ALEXANDER M. SHIRLEY, TILLIAM KEMP, Jr.

